学号1251401243《单片机》课程设计（2012级本科）题目：基于单片机的抢答器设计系（部）院：物理与机电工程学院专业：电气工程及其自动122班作者姓名：杨存恩指导教师：向根祥职称：副教授完成日期：2015年6月28日1目录1引言.......................................................................................................................................................21.1设计目的.....................................................................................................................................21.2设计要求.....................................................................................................................................22设计方案...............................................................................................................................................23硬件设计...............................................................................................................................................33.1电路原理图.................................................................................................................................33.2总体设计电路图..........................................................................................................................33.2.1振荡电路..........................................................................................................................43.2.2复位电路..........................................................................................................................43.2.3加减分电路及蜂鸣器报警电路......................................................................................53.2.4抢答电路及裁判控制开始停止电路..............................................................................53.2.5数码管显示电路..............................................................................................................64仿真过程示意.......................................................................................................................................74.1开始抢答.....................................................................................................................................74.2抢答倒计时.................................................................................................................................84.3答题及答题倒计时.....................................................................................................................84.4违规抢答.....................................................................................................................................94.5答题正确加分.............................................................................................................................94.6答题错误减分.............................................................................................................................94.7抢答结束...................................................................................................................................105程序流程图.........................................................................................................................................116课程设计总结.....................................................................................................................................11参考文献.........
